this is bbc news — welcome, if you're watching here in the uk, or around the globe. i'm david eades. our top stories... harrowing scenes in ukraine — as russian forces step up their bombing of civilian areas. in irpin — residents flee under relentless bombardment. there is a fair amount of incoming fire coming into this area, artillery fire, there are loads of civilians around. the international atomic energy agency expresses fears for ukrainian nuclear plants now under russian control as the authorities appear unable to speak to their staff. ukraine's young cancer patients